In Age of Ultron, Wanda Maximoff uses her powers to cause mental trauma to the Avengers. But Clint Barton is apparently the only Avenger NOT to be put under Wanda's spell. Why not?
Here is what I noticed:
Tony Stark was caused to feel that he had killed the Avengers. Thor was caused to fear that all his subjects would die because of him. Captain America was caused to ponder the woman he left behind in World War II. Natasha was caused to relive traumas from her training as an assassin. And while we did not see Banner's visions, we did see Hulk ravaging a city right after, and Tony Stark telling Hulk that is was just Wanda in his head.
By contrast, we never see Clint have a traumatic vision or any after effects or even reference to a trauma. What we do see is one of Clint's arrows on Wanda's forehead as Clint says "mind control is not really my thing." Then Pietro Maximov takes the wounded Wanda away from Clint, and Clint calls in to Tony Stark reporting that the rest of the team is down. Clint also has the mental presence to be the one to fly the jet to his home so the rest of the team can get a break while they are debilitated. And Clint tells his wife that the team took a hit from Wanda, without mentioning himself. All this evidence points to Clint having resisted Wanda's attempts to entrance him.
So why is Clint strong enough to resist Wanda when none of the other Avengers were?